Numbers beginning with 401-434

Providence, the capital and most populous city in Rhode Island. Founded in 1636, it is one of the oldest cities in the United States. It is located in Providence County, and is the third-largest city in the New England region. Providence has a city population of 182,042 and is part of the 37th-largest metropolitan population in the country, with an estimated population of 1,600,856, exceeding that of Rhode Island by about 60%, as it extends into southern Massachusetts. This can be considered in turn to be part of the Greater Boston commuting area, which contains 7.6 million people. The city is situated at the mouth of the Providence River, at the head of Narragansett Bay. source

Area code 401 is the sole telephone area code of Rhode Island. 401 is one of the original 86 North American area codes, which were created in 1947. Rhode Island is among the decreasing number of North American jurisdictions with only one area code. source